Robert Johnson (author), 1889, Title page for Robert Johnson "A Complete Treatise on the Art of Retouching Photographic Negatives and Clear Directions how to Finish & Colour Photographs" (London: Marion and Co., 1889), Title page, Private collection of Rob Oechsle, LL/39722
Robert Johnson (author) 1889 Title page for Robert Johnson "A Complete Treatise on the Art of Retouching Photographic Negatives and Clear Directions how to Finish & Colour Photographs" (London: Marion and Co., 1889)
